OBD-II code · Powertrain (generic)
P0548 Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 1
Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 1: the signal voltage is below the expected range. The ECU uses this temperature to protect the catalyst and diesel particulate filter.
Is it safe to drive with P0548?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySignal shorted to ground
- Less likelyConnector pins corroded - high contact resistance
- Less likelyHarness chafing through insulation
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.6–1.8 h
- Emissions test
- Likely to fail
- Parts involved
- Egt Sensor B2s1
Related codes
- P242CExhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 3
- P2468Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 3
- P2472Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 3
- P2475Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 4
- P2481Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 5
- P2486Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 5
- P2EA3Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 6
- P0545Exhaust Gas Temperature Sensor Bank 1 Sensor 1 Low
- P0546Exhaust Gas Temperature Sensor Bank 1 Sensor 1 High
- P0547Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 1
- P0549Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 1
- P054ACold Start B Camshaft Position Timing Over-Advanced Bank 1
- P054BCold Start B Camshaft Position Timing Over-Retarded Bank 1
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.